在Mycobacterium结核病感染期间,Activin A介导的KAT8表达会诱导铁亡
Bijewar Ashish Satish1, Smriti Sundar1, Raju S Rajmani2
1Department of Microbiology and Cell Biology, Indian Institute of Science, Bengaluru, Karnataka, India.
The Journal of infectious diseases
|September 21, 2025
概括
活性蛋白A通过通过KAT8和NRF2.2诱导铁亡来促进结核病的进展. 在小鼠中抑制激素A或KAT8降低了细菌负担和疾病严重程度,揭示了结核病的新治疗标.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 病理学 病理学 病理学
背景情况:
- 活性蛋白A水平与结核病 (TB) 严重程度相关.
- 结核菌菌 (Mtb) 感染会诱导铁亡,这是一种细胞死亡途径,有助于病原体的生存和传播.
研究的目的:
- 调查活蛋白A和SMAD2/3信号传导在Mtb诱导的铁亡中的作用.
- 阐明将activin A与ferroptosis和TB进展联系起来的分子机制.
主要方法:
- 在ChIP的测试中,ChIP进行了测试.
- 功能丧失的研究.
- 结核病的体内小鼠模型.
主要成果:
- 活性蛋白A调节KAT8表达,控制HO-1水平.
- 通过KAT8介导的乙化增强NRF2的核定位,在Mtb感染期间增加HO-1表达.
- 在小鼠中抑制活性蛋白A受体或KAT8可降低Mtb负担,限制传播,改善结核病理学.
结论:
- 活性蛋白A在调节NRF2局部化和Mtb诱导的铁亡中发挥着新的作用.
- 向激素A-KAT8-NRF2通路为结核病提供了一个潜在的治疗策略.
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